Play the role of medical centrifuge vibration system

Play the role of medical centrifuge vibration system

Medical centrifuge in the use of time in time if improper operation may be excited by the centrifuge vibration centrifugal centrifuge tube, usually first installed the density gradient medium solution, the sample solution is added in the liquid level gradient medium, medical centrifuge in centrifugal, refrigeration centrifuge due to centripetal force, the particles to separate the sample layer, according to the different sedimentation velocity sedimentation to the bottom of the pipe, centrifugal after a certain period of time, the settlement of particles gradually separate, finally forming a discontinuous zone of a series of clear interface, the sedimentation coefficient is, the more quickly down the settlement, the zone is lower, the required large particles in centrifugal settling the fastest arrived in the bottom of the pipe before the density of the particles, samples should be greater than the gradient of the medium density.
Gradient medium, usually with the sucrose solution, the maximum density and concentration of up to 1.28 kg/cm3 and 60%. Select medical centrifuge should according to suspension (or emulsion) of solid particles size and concentration, solid and liquid (or two fluid density difference), liquid viscosity, residue (or sediment) characteristics, and the parting of the requests from a comprehensive analysis, to meet cake (sediment) moisture content and the filtrate (separation liquid) clearance degree request, preliminary selection using which kind of centrifugal separation machine. Then frozen large capacity centrifuge according to the disposal quantity and to automate the operation request, the types and specifications must centrifuge, finally by practical experiment research.
Vibration medical centrifuge system aroused: motor drive system, screen basket and machining error, bearing and shaft bracket, the assembly is not balanced, in vitro form break break cavity water, through the high temperature problem by the formation of the problem, in the high centrifugal seriously, the high-speed rotation axis tilt, vibration, while the vibration frequency is beyond the limit, will lead medical centrifuge centrifuge resonance of the whole system, lead to serious results.

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